论文标题
量子场的流体动力学：Wigner分布的正则扩展
Hydrodynamics from quantum fields: a regularized expansion from the Wigner distribution
论文作者
论文摘要
二阶相对论流体动力学具有令人惊讶的预测性，即使存在较大的梯度。矩的方法的流体动力扩展不需要梯度扩展，而是与相对论动力学理论的经典本质结合。在这项工作中，应用了矩分布的修改版本（分布函数的量子前体），以恢复系统上可系统地改进的流体动力扩展，避免避免在量子情况下出现的差异。正规化扩展的收敛性在远离平衡的情况下进行数值检查，远离动力学极限情况。
Second-order relativistic hydrodynamics is surprisingly predictive, even in the presence of large gradients. The hydrodynamic expansion from the method of moments does not require a gradient expansion, but it is intrinsically bound to the classic nature of relativistic kinetic theory. In this work a modified version of the method of moments is applied the Wigner distribution (the quantum precursor of the distribution function) to recover a systematically improvable hydrodynamic expansion, avoiding the divergences that would otherwise appear in the quantum case. The convergence of the regularized expansion is checked numerically in a far from equilibrium, distant from the kinetic limit case.
